In July, the DoJ released 412 pages of heavily redacted documents related to the FISA court's approval of surveillance of Carter Page, a U.S. citizen. The redactions, have become controversial.
Among the items redacted include the seemingly innocuous details like date(s) and specific citation to sections of the U.S. code authorizing this action. The coding of those specific redactions seems to indicate that the information is classified for national security or foreign relations reasons, prohibited from disclosure by law, and could reasonably be expected to interfere with enforcement proceedings.
Has anyone offer an explanation as to how that specific date of the application and U.S. code section citation are so secret?
Beside the above "simple" information, other redactions seem to be annotated with excessively complex notes. Can anyone decode the hyphenated FOIA exemptions annotations such as "b7E-1,2,3,7"? While the wording of 5 USC 552 (b) amounts to a single run-on sentence, (b)7E gets specific enough to narrow this down to just 34 words, that seem insufficient to explain references to sub-parts as high as 7.
DoJ's policy on exemption 7(E) is massive, and make reference to dozens of court cases, but does not itself seem to be subdivided to a point where identify the meaning of the "b7E-1,2,3,7".